Process of making hydrosulfids.



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1'0 all whom it mag concern:

Be it known that I, Ansel Mornnr'r, a citizen of the United States, residing at Indian apoli's, in the county 0E. Marionand. State of have invented certain newa'nd' use-g Indiana, ful Improvements in Processesof Fredd e ing Hydrosulfids, of which the following is a specification. p

This invention relates to a newanduseful process for producinghydrosulfids-of alkalineearth metals in solution from materials easily transported or stored.

'Heretofore in the mannfacture"oii'hydro-v sulfids it has been cnstomarytopass sulfureted hydrogen into a solution of the hydroxids of alkaline-earth metals or over the moistened hydroxies until saturation took place.

My new process consists in mixing the solu ble salts of magnesium with sulfide of alkal line-earth metals-such as barium, calcium, or strontium-in the proportions of one equivalent of the magnesium to two equivalents of the alkali-earth-metal sulfid, whereby in the presence of water at common temperatures the following general reaction takes place:

in which M equals the sulfur equivalent of alkaline earth and R equals any acid element or radical, according to the usage of chemical CaI-l +CaSO +MgO, aq.

case the reaction occurs in accordance with Berthollets law, that where reacting bodies are brought together in solution if an insoluble or difiicultly-soluble body can be formed it will be formed and the attendant reactions will also take place. Here the re- In any Letters Eatent No. 848,772, dated ld'ay 1, 1 9 klppliostion filed January 6,1899, Serial No. 'II lQS'ISVYHo specimensJ; I 1 Y i acting bodies are CaS, a soluble body; hIgSOg asolu-ble' body, which by reaction forms the dificu-ltly-soluble body Mg0,aq, (or Mafi -O 21e,) and the attendant bodies fiafi s and ease I x v r. 'llhesolutiens of the hydrosulfids of any ai= kaline-jearthmetal are not suitable for trans portationor storage.- and should be used on thespot where made. The-ingredients, how --eve'r--such as calcium su1fid-,'&'c.', and mag nesin'm" sulfate, chlorid, &o;-'- are readily transportedin a dry state, thus saving freight charges, and may be stored indefinitely without change in'proper vessels." -My invention therefore includes a mechanical mixture of suchas calcium, barium, or strontiuni and a drysalt otv magnesium in the proportion essentially of two equivalent-slot sulfid to one be readily prepared for use by: mere mixture therefore is a practicable article of commerce,

wet hydrosulfidor mixture.

, signed to be used for removinghair from hides are applicable. The solution may be made at any tauneryor other place where it is de sired to use it by simply dissolving the ingredients in water and mixing and allowing to react an hour or so, fornse. f The hydrosnlfids themselves are unstable bodies, rapidly losing their sulfureted hydroare not practically recoverable from solutions and are not therefore suitable articles of commerce. Attention is called to the fact that the metals suitable for reaction with ma 'nes'ium salts must all form soluble hydro a xids and hydrosultid's; That this is a necessary qualification is seen from the typical equations here given, where the reaction depends on the comparative insolubility of magnesium hydroxid.

Since the-metals of .the alkaline-earths such as barium, strontium, and calcium are metals having soluble hydroxide and hydrosulfids, the sulfide of such metals are pracof magnesium salt, and such dry mixture will be suitable forshipment and stqrage and will:

with water at the point of consumption, and

a property not possessed by the dissolved'or and for other purposes to which hydrosulfids' genby exposure and becoming caustic,and

the dry snlfid otan alkaline-earth metal The solutions of thehydrosnlfids are dewhen it will be ready tically available. These characteristics, as

stated, permit the formation at hydrosulfids in solution by reaction inpres'ence of water of such sulfids with one-half equivalent of magnesium salt in accordance with Barthollets flaw.

Having thus fully described my invention,

- what I claim as new, and wish to secure by Letters Patent of the United States, is-

Theprocess of producing, in solution, a hy-- dlfOSlllfiQ of an alkaline eerth metal, consisting in: mixing two equivalents of the snlfid of" sin alkalineearth etal with one equivalent of a. magnesium salt,- substantially in accordance with the following equation:

In witness whereof I have hereunto set my hand and seal at Indianapolis, Indiana, this 3d day of January, A. D. .189.

' ANSIL MOFFATT- L. s] Witnesses: i

JOSEPH AJMINTUR NQ CARL SCHILEGEIZ. 

